Machine for forming rings.



ELIAS T. GOLDBERG AND AARON GALBORD, F BBIDGEPORT, CONNECTICUT.

MACHINE FOR FORMING RINGS.

Specification of Letters Patent.

' Patented June 13, 1916.

Application filed November 18, 1915. Serial No. 61,358.

To all whom it may concern:

Be it known that we, Emas T. GOLDBERG, a citizen of the United States ofAmerica, and AARON GALBono, a subject of the Czar of Russia,both'residing at Bridgeport, Fairficld county, Connecticut, haveinvented certain new and useful Improvements in Machines for FormingRings, of which the following is a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

Our invention relates to machines for forming rings preparatory to theoperation of soldering and polishing them, and consists of certaindetails of construction and combination of parts hereinafter fullydescribed and then particularly ointed out in the claims that concludethis escri tion.

In the accompanying drawings 1 re 1 is a front elevation of our machine-1g. 2 a lan view-Fig. 3 a section at the l1ne 4v, :1: of Fig. 2-Fig. 4a. section at the line 3 p, oi Fig. 2, and Fig. 5 a detail perspective 0the anvil.

Similar numerals of reference denote like parts in the several figuresof the drawing.

1 is the bed-of the machine and 2 a block rising therefrom.- This blockhas a vertically disposed opening or recess 3 within which is a recirocatory head 4 havm on its rear side ace a rack 5. Exten mg through therear of this block from s1de to side is a circular opening or recess 6which is disposed at right ang es to the recess 3, and journaled withinthis recess 6 is a rock shaft 7 that is prevented from displacement inany suitable manner,-as, for instance, by a pin 8 driven through theblock 2 into an annular groove 9 around said shaft. To the outer end ofthis rock shaft is secured any suitable hand lever 10 for operating theshaft, and the opposite end of the shaft is formed into a pmion 11 whichis in mesh with the rack 5. v

12 is a hammer bar whose rear end is secured within the head 4 by ascrew 13 and extends within vertical guideways 14 in opposite sides ofthe block 2. The forward portion of this bar projects beyond the block 2and is formed into differential circular portions 15, 16, 17.

18 is an anvil detachably secured within the bed-1 and havingdifferential circular recesses 19, 20, 21, which are immediately belowthe portions 15, 16, 17, and correspond therewit in contour.

The operation of our improvement is as follows :TA ring with a segmentout therefrom, 1n accordance with our invention set forth in our pendingapplication Serial No. 61,357 filed on even date herewith, is placedaround one of the portions 15, 16, 17, and the hand lever 10 operated tohammer the ring into a complete circlet with the severed ends abutting,the rin meanwhile being shifted around the circu ar portion by handuntil the desired result is obtained. Of course it will be understoodthat the bar and anvil 18 may be replaced by other similar parts whosecircular ortions and recesses correspond with the size of the ring to hetreats B the continued hammering actlon of the bar 12 with the frequentshifting of the ring, the latter will be perfectly formed and incondition for soldering and polishin In uti 'zin our device for making aring from a straight blank, the length of the latter is, of course,predetermined by the size of ring desired, and the ends of the blank aresheared at the roper angle so that they will closely abut 1n thecompleted ring. By the constant hammering action of the bar 12 astraight blank is radually curved into the form of a ring, it beingunderstood that the curved portions of the bar and the correspondingcurved recesses in the anvil are suitable for the size of ring to beformed.

The anvil is secured within a suitable way in the bed 1 by screws 22driven through the edge of the bed against the anvil, and when adifferent anvil is to be used the screws are backed so that the anvilsmay be changed.

We claim 1. A machine of the character described comprising a blockhaving a recess therein and coinciding guideways provided in opposingwalls of the block recess, a hammer and slidable in the block recess, ahammer bar secured to the head and projecting therefrom into theguideways of the block, an anvil with which the hammer bar coiiperatesand means for actuating the hammer head.

2. A machine of the character described comprising a block having arecess therein and coinciding guideways provided in opposing walls ofthe block recess, a hammer iead slidable in the block recess andprovided with an opening therethrough, a hammer bar passing through thehead opening and into the block guideways, one projecting end of thehammer bar being formed into differential circular ortions, an anvilhaving corresponding di erential recesses to receive the portions of thehammer bar, and means to reciprocate the hammer head.

3. In a machine of the character described, a body having a blockrovided with a recess. a hammer head slidab e in the block recess andformed with a rack part, said block having a second recess communicatinwith the first recess, a rock shaft journale in the block and havin atoothed part in the second recess of the iilock meshing with the rackpart of the head, an anvil, and a 6091s! of this hammer bar carried bythe head for cooperation with the anvil.

4. A machine of the character described com )rising a movably mountedhalmneu being adjustable to compensate for wear of its portions.

In testimony whereof we allix our signatures in presence of twowitnesses.

ELIAS 'l. GOLDBERG. AARON GALBORD.

\Vitnesses:

F. W. Sm'rn, J 11., M. T. Lonomm.

by addressing the "Commluloser e! Batezzts Wumml, D. O."

